Vulnerability Details : CVE-2018-6794

Suricata before 4.0.4 is prone to an HTTP detection bypass vulnerability in detect.c and stream-tcp.c. If a malicious server breaks a normal TCP flow and sends data before the 3-way handshake is complete, then the data sent by the malicious server will be accepted by web clients such as a web browser or Linux CLI utilities, but ignored by Suricata IDS signatures. This mostly affects IDS signatures for the HTTP protocol and TCP stream content; signatures for TCP packets will inspect such network traffic as usual.
Published 2018-02-07 05:29:00
Updated 2019-03-01 23:33:08
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2018-6794

Exploit prediction scoring system (EPSS) score for CVE-2018-6794

EPSS FAQ
23.48%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 97 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-6794

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
 MEDIUM AV:N/AC:L/Au:N/C:N/I:P/A:N
10.0
2.9
 NIST
5.3
 MEDIUM CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.9
1.4
 NIST

CWE ids for CVE-2018-6794

  • The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-6794

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